[metrichost] 
node1 ansible_ssh_host=192.168.1.111 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/root/.ssh/id_rsa
node2 ansible_ssh_host=192.168.1.112 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/root/.ssh/id_rsa
node3 ansible_ssh_host=192.168.1.113 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/root/.ssh/id_rsa
node4 ansible_ssh_host=192.168.1.114 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/root/.ssh/id_rsa